Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry Additional 21st Century Science > Chemistry Additional > Flashcards

Chemistry Additional Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Biology 101 flashcards Organic Chemistry 101 flashcards
1
Q

A compound that dissolves in water to give a solution with a pH lower than 7.

A

Acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Form salts when then neutralize alkalis

A

Acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Gives off hydrogen gas when reacts with metals

A

Acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A compound that contains hydrogen in its formula and produces hydrogen ions when it dissolves in water

A

Acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The mass of the required chemical obtained after separating and purifying the product of a chemical reaction

A

Actual yield

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A compound that dissolves in water to give a solution with a pH higher than 7

A

Alkali

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Can be neutralized by an acid to form a salt

A

Alkali

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Solutions of these contain hydroxide ions

A

Alkali

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A element in group 1 of the periodic table

A

Alkali metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Reacts with water to form an alkaline solution

A

Alkali metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

A mixture of metals

A

Alloy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Chemicals made by industry of a scale of thousands or millions of tonnes per year. Examples are sulfuric acid, nitric acid, sodium hydroxide, ethanol and ethanoic acid

A

Bulk chemical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A graduated tube with taps or valves used to measure the volume of liquids or solutions during titrations

A

Burette

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

A chemical that starts or speeds up chemical reactions but is not used up in the process

A

Catalyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The different chemical forms that an element can take, for example, chlorine can be an atom, a molecule and an ion.

A

Chemical species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The theory that reactions happen when molecules collide. This theory helps to explain the factors that affect the rate of reactions

A

Collision theory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

A chemical that may destroy living tissue on contact

A

Corrosive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Strong attractive forces that hold atoms together in molecules. Form between non-metallic elements.

A

Covalent bonding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The outer layer of the lithosphere

A

Crust

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

A material with molecules, atoms or ions lined up in a regular way

A

Crystalline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

A form of carbon with a giant covalent structure which is very hard

A

diamond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

a molecule with two atoms

A

diatomic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

a conductor made of metal or graphite through which a current enters or leaves a chemical during electrolysis.

A

Electrode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Splitting up a chemical into its elements by passing an electric current through it.

A

Electrolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

A tiny negatively charged particle which is part of an atom

A

Electron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

The force of attraction between objects with opposite electric charges

A

Electrostatic attraction

27
Q

The point during a titration at which the reaction is just complete

A

End point

28
Q

A reaction that takes in energy from the surroundings

A

Endothermic

29
Q

A reaction that gives out energy to its surrounding

A

Exothermic

30
Q

Chemicals made by the chemical industry in smaller quantities. Used in food additives, medicines and pesticides.

A

Fine chemicals

31
Q

A 3D arrangement of atoms that are held together by covalent bonds. Silicon dioxide and diamand have this arrangement

A

Giant Covalent Structure

32
Q

The structure of solid ionic compounds. There are no individual molecules, but millions of oppositely charged ions packed closely together in a regular 3D arrangement

A

Giant Ionic Lattice

33
Q

The family name of the group 7 elements

A

Halogens

34
Q

All the water on Earth

A

Hydrosphere

35
Q

A chemical that shows whether a solution is acidic or alkaline

A

indicator

36
Q

Does not form a solution in water or other solutes

A

Insoluble

37
Q

Very strong attractive forces that hold ions together.

A

Ionic bonding

38
Q

Compounds formed by the combination of a metal and a non-metal. They contain positively charged metal ions and negatively charged non-metal ions

A

Ionic compound

39
Q

A spectrum made up of a series of lines. Each element has its own characteristic one.

A

Line spectrum

40
Q

The rigid outer layer of the Earth, made up of the crust and the part of mantle just below it.

A

Lithosphere

41
Q

A compound of a metal with oxygen

A

metal oxide

42
Q

Very strong attractive forces that hold metal atoms together. The electrons drift freely around the lattice of positive metal ions and hold the ions together

A

Metallic bonding

43
Q

A naturally occurring element or compound in the Earth’s lithosphere

A

Mineral

44
Q

A group of atoms joined together.

A

Molecule

45
Q

A chemical in its liquid state. Above melting point but below boiling point

A

Molten

46
Q

A reaction in which an acid reacts with an alkali to form a salt

A

Neutralization reaction

47
Q

A natural mineral that contains enough valuable minerals to make it profitable to mine

A

Ore

48
Q

A reaction that adds oxygen to a chemical

A

Oxidation

49
Q

A measure of the efficiency of chemical synthesis

A

Percentage yield

50
Q

A row in the periodic table

A

Period

51
Q

A material made up of very long molecules.

A

Polymer

52
Q

Ions that have lost electrons

A

positive ion

53
Q

An insoluble solid formed when mixing two solutions

A

Precipitate

54
Q

A measure of how quickly a reaction happens

A

Rate of reaction

55
Q

The chemicals on the left hand side of an equation

A

Reactants

56
Q

A reaction that removes oxygen from a chemical

A

Reduction

57
Q

You add up the relative atomic masses of the atoms in a chemical formula to get this

A

Relative formula mass

58
Q

An ionic compound formed when an acid neutralizes an alkali or when a metal reacts with a non-metal

A

Salt

59
Q

The use of instruments to produce and analyse spectra.

A

Spectroscopy

60
Q

The area of a solid in contact with other reactants that are liquids or gases.

A

Surface Area

61
Q

The amount of a product that would be obtained in a reaction if all the reactants were coverted to products.

A

Theoretical yield

62
Q

A technique used to find the exact volumes of solutions that react with each other.

A

Titration

63
Q

A chemical that may lead to serious health risks or even death.

A

Toxic

Chemistry Additional 21st Century Science (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions